grommann



(No Model.) 8 SheetsSheet 1.

H. GROMMAN N. WORK EOLDER FOR BRUSH MACHINES. .No. 603,187.Pat'entedApr. 26. 1898.

WITNESSES M8WNVENIHH 8 I IHA D 7 uonms PIZYERS $0.. Pumo umu wnsmuman.a. c.

's sheets-sheet 2.

(NqMod eld 11. GROMMANN; WORK HOLDER FOR BRUSH MAUHINES. 1

No; 603,187. Patented Apr. 26,1898.

WWHVENTUR WITNESSES ATTHRNEVYE Y nonms PETERS cam .wAsummuu n c 8Sheets-Sheet 3.

(No Model.)

H GROMMANN v WORK HOLDER FOR BRUSH MACHINES. No. 603,187.

PatentedApl 26, 1898.

WINv NmH WITNESSES AUUHNEYS WASHINGYD (No Model.) 8 Sheets-Sheet 4. H.GROMMANN.

WORK HOLDER FOR BRUSH MAGHINES.

Patented Apr. 26, 1898.

WITNESSES ,MMMINVENTBH G ARTTDRNEYS ('No Model.) 8 Sheets-Sheet 5.

.H..JGR OMMANN. WORK HOLDER-FOR BRUSH MACHINES.

o. 603,187. 'PaJ tentedAprQ26/l898.

67M v JWMM} I I ATTDHNEYE 8 Sheets-Sheet 6 (No Model.)

H GROMMANN WORK HOLDER FOR- BRUSH MACHINES.

Patented Apr, 26, 1898.

WITNESSES 1 WMWINVENTUR I ATTORNEYS (No Model.) s Sheets-Shet 7.

H. GROMMANN. WORK HOLDER FOR BRUSH MACHINES.

No. 603,187. Patented Apr. 26, 1898.

WITNESSES, j ME M MNVENIUH ATTURNEYE' (No Model.) s Sheets-Sheet s.

H. GROMMANN,

WORK HOLDER FOR BRUSH MACHINES. No. 603,187. Patented Apr. 26, 1898.

WITNESSES )MWM/m'vEN-m I WATTURNEYEI UNITED" STATES PATENT OFFICE- IHUGO GROMMANN, OF SOHOENHEIDE, GERMANY, ASSIGNOR TO CARL EDUARDFLEMMING, OF SAME PLACE.

WORK-HOLDER FOR BRUSH-MACHINES.

SPECIFICATION forming part of Letters latent No. 603,187, dated April26, 1898.

Application filed December 10, 1896. Serial No. 615,225. (No model.)Patented in England August 7, 1896, No. 17,491, and

V in Luxemburg August 8, 1896, No. 2,585.

To all whom it may concern: I I

Beit known that LHUGO GROMMANN, a subject of the King of Saxony,residing at Schoenheide, Kingdom of Saxony, German Empire, have inventedan Improvement in Work- Holders for Drilling Brush-Backs, (patented inEngland, No. 17,491, dated August 7, 1896, and in Luxemburg, No. 2,585,dated August 8, 1896,) of which the following is a specification.

My invention relates to machines for drilling brush-boards and bindingthe bristles in the holes drilled therein; and it consists in thespecial features of construction and arrangement hereinafter fully shownand described.

In the drawings, Figure 1' is a side View of the machine; Fig. 2, a topview of the lower or table portion of the machine. Fig. 3 is a frontView of Fig. 2. Fig. 4: is a detail side view of a work-table and itsattached mech-v anism. Fig. 4 is a detail sectional view on line 4 4 ofFig. 4. Figs. 5, 6, and 7 are views of details of the supporting meansfor the work-tables. Fig. 8 is a side view of the grooved driving-disk.Fig. 9 is an edgeview of the same with its' attached mechanism; Fig. 10,a plan view of the same. a side view showing a modification of thedriving mechanism. Fig. 12 is an end view thereof, and Fig. 13 is a planview of this modification.

The work-tables a'are similarly screwed to their supporting-brackets b,one of said tables being intended to hold the brush-board in which holesare to be drilled. The other holds the board in which the brush-bristlesare to be inserted. The vertical arms 0 of the brackets move throughguides d, which are pivoted to a main block or guide-standard f by thescrew 6, Figs. 2, 3, and 4, and from this construction the work-table amay have Vertical movement through the guides d and a tilting movementfrom'the screw 6 as a center. The lower ends of the bracket-arms ccarry'bolts g, the inner ends 72 of which have antifriction-rollers,which slide in the slots is of the plates t', which are screwed to theguideblock f. This plate i may be. removed and replaced by another platehaving a different form of slot, whereby a brush-board of any Fig. 11 isdesired form may be operated upon, and its surface will by theappropriate slotted plate be caused to move in proper proximity to thetool. The plates '6 are of the same shape as to their slots for bothtables, as of course the same block is removed from one table and placedupon another.

The guide block orstandard f is adapted to slide in a block m, which mayturn about a pin Z in the-plate r, and thus swing the guide, with theworlbtable, laterally. The lower end f of this guide-block f has aroller 0, entering a slot (1 in a plate 19, which is also removable andmay be replaced by another plate having a differently-shaped slot, so asto give the work-table any desired lateral I movement to suit thelongitudinal surface form of the brush-board. The plates 19 are securedto the cross-plate '1', which is vertically adjustable on the frame 8and adapted to be held by the screws S. An adjustingscrew S, Fig. 3,engages the plate 0', and by this arrangement the work-tables may beadjusted to, suit different thicknesses of boards, both tables beingadjusted simultaneously through their standards f from the crossplate r.

i The automatic movements of the work-ta blesand the main standards areeffected as follows: A piece 2 is fitted to the standard f below thework-table to slide from front to rear, a pivot-pin 3 passing throughthe sliding piece and having a nut 4 to hold the sliding piece on thepin. A block 6, Figs. 5, 6, and 7, is carried pivotally by a pinextending between the upper parts of the piece 2. A second block 6' isarranged above the block 6, said block 6 being carried on a pinextending between the sides of the standard f. Over the blocks 6 and 6 asliding block 6 is placed, the forks of which embrace the blocks,

.while the sole portion 6 is screwed to the side engaging a pinion ,2 ona shaft 10, supported in hearings to of the frame 8, Fig. 2. The shaftto carries at its rear end a pinion .2 engaged by a vertically-slidingrack 71, Figs. 2, 9, and 10, having a roller y extending into a groovein the face of a disk 25. This disk is rotated step by step by a pawl tengaging the teeth of the disk, the said pawl being carried by a blockt, which moves in a way in a standard 25", the block, being connectedwith a pitman t, thus imparts motion to the rack 31 and thence to thepinion .2 and the shaft u, which operates the slide (I and with it thetable a, which is thus moved in the direction of the length of thebrush-board, this movement being permitted by the swinging of thesupport or standard f. The movement in the forward and backwarddirection of the worktable or in the direction of the width of thebrush-board is performed by the movement of the slide (2, which iseffected from a second groove in the disk 15, (see full lines in Fig.8,) into which a roller 1f extends, this roller being carried by asliding piece 1', moving in a slotted frame and being fixed to the endof the rod 0;, the other end of which is connected to the slide (P. Aspring-box f is fixed to the cover of the pivoted guide-block m, thespringbolt of said box being arranged to press upon the standard f, andthus force the same upwardly to relieve the frictional contact betweenthe pivot of the standard and the walls of the slot q.

The means for operating the drills and the binding device for thebristles form no part of my invention and are not described herein.

Figs. 11, 12, and 13 show a modification of the machine whereby theamount of movement of the work-tables may be varied both lengthwise andlaterally. The rack y in this modification, which is driven by thegrooved disk 2, drives the pinion .2 on the shaft a Fig. 13, which shaftis supported in bearings V Z. The pinion z engages the gear T on a shaftB, which is adjustably held in a slot of the frame S, said slot beingconcentric to the shaft to. Gear T drives the shaft a through anexchangeable gear .2 thereon, which shaft also carries a gear .2,driving the gear .2 on the shaft u. This shaft in the main form carriesthe gear .2, which moves the work-table transversely of the machine. Asthe gear .2 is exchangeable, the movemnt of the slide (Z may be variedto change the length of movement of the work-table. The motion of thelower slide d crosswise of the brush-board to move the table forward andbackward longitudinally of the machine is also effected by the disk 6,which, through the slide 1* and rod 02, is connected with a swinginglever K by a pin 0' and slot, the end of the rod working in a hearing10. This lever is connected with the lower slide (1 by a rod connectedat b b to the slide and lever, respectively, and the fulcrum Z1 of theleveris adjustable in a loop 76, so that the length of the lever-arm maybe changed.

The machine is driven by a crank t through a pinion 25 and a gear 6 asshown in Figs. 1, 2, S, and 12, the latter gear being on the shaft ofthe disk 25.

I claim 1. In combination the frame, the standard f having a forkedupper end, the transverse slide, the pin 3 and block 2 forming theconnection between the slide and the upper forked end of the standard,the work-table, the forked block (3 depending therefrom into the forkedend of the standard and engaging a portion of the block 2, the bracketsZ) depending from the work-table alongside the standard, the slottedguides engaging the said brackets, the pivoted guide-block, the slottedguide for the standard f, and a second slide carrying the transverseslide with means for operating said slides, substantially as described.

2. In combination the work table, the swinging standard, the connectionbetween the standard and table comprising the sliding block 2 in thestandard, the table pi votally connected to the standard and engagingthe block, the pin 3 engaging the block 2 and means for moving the pinlongitudinally and laterally, substantially as described.

In combination, the standard carrying the work-table, the sliding andpivotal c011- nection m for the standard to allow it to have verticalmovement as it swings, the slotted guide-plate receiving a roller fromthe standard, and a vertically-adjustable support for the slottedguide-plate, said adjustable support carrying also the pivotalconnection 171, substantially as described.

4. In combination the work-t able,the standard f carrying the same, thepivoted guideblock 711 through which the standard may slide, the slottedguide to cause the standard to have vertical sliding movement as itswings, and the spring-box having a bolt forprcssing the standardupwardly to relieve pressure on the slotted guide-plate, the saidspring-box being suspended from the pivoted guide-block to oscillatewith the standard, substantially as described.

5. In combination the pivoted worlotable, the pivoted standard carryingthe same, the slides d and 01 for moving the said parts 011 theirpivots, the grooved disk 25, the gearing operated thereby and connectedto the slide (1, for operating the same, said gearing comprising anexchangeable portion, and the connections from the disk to the slide (Zcomprising an adjustable lever whereby the traverse of the slides may bechanged to suit different brush boards, substantially as decribed.

In testimony whereof I have hereunto set my hand, at Schoenheide, this25th day of August, 1800, in the presence of two subscribing witnesses.

HUGO GROMMANN.

\Vitnesses:

THEo. M. STEPHAN, EUGEN KLEMENZ.

